#4. Bray Wyatt - Husky Harris turned out to be a future WWE Champion
Husky Harris' run on the WWE main roster didn't last too long, thankfully. After Randy Orton punted him back to WWE developmental territory, he took time, but in 2012, he developed a new character known as "Bray Wyatt" - a supernatural-like character, but similar to a cult figure.
This turned out to be a decision so crucial, that it may have saved his WWE career. It was right around then that FCW was being rebranded to NXT - which went from a WWE Game Show to a developmental territory.
He didn't spend too long in NXT, and by 2013, he was all ready for his re-debut on the WWE main roster. His character enamored fans, and he constantly found himself in important spots, facing top-tier WWE Superstars.
The only problem was that WWE built him up, only to use him as a stepping stone to other names that they wanted to push. Despite this, Bray Wyatt has re-invented himself and been relevant despite inconsistent booking from WWE.
He is now 'The Fiend', and is a 3-time World Champion - having one reign with the WWE title and two reigns with the Universal Championship. Changing his name truly set his WWE career off.
#3. Kane - From a dentist to one of the most fierce characters in WWE history
Glenn Jacobs needed a long time to get his WWE career kickstarted. He debuted as Unabomb but eventually turned into Dr. Isaac Yankem - the evil dentist. He even feuded with multi-time WWE Champion Bret Hart and faced him at SummerSlam in 1995.
The next step was for WWE to turn him into the fake Diesel after Kevin Nash left the company in 1996. He was accompanied by fake Razor Ramon, played by Rick Bognar.
Naturally, this had a bad reception from WWE fans, and it was only in 1997 when WWE began a slow-burning build to his debut as Kane. At Bad Blood 1997, the main event saw the first-ever (and arguably best-ever) Hell in a Cell match between Shawn Michaels and The Undertaker - with the winner facing Bret Hart for the WWE Championship.
While The Undertaker seemed close to victory, Paul Bearer came out with the debuting Kane, who ripped open the steel cage and decimated his half-brother, allowing Michaels to pick up the win.
Many fans believe that Kane's debut was the greatest in WWE history, and it's hard to argue against it. Changing his name from Unabomb to Isaac Yankem to Diesel and eventually, Kane was a great payoff that allowed his career in WWE to take off.